Deep-well pump.



PATENTED DEG. 3, 1907. H. A. BRISCO & C. J. ERICKSON.

I DEEP WELL PUMP APPLICATION FILED DEO. 2B. 1906.

`or ot`her liquid will be elevated UNITED' sTATEs PATENT oEEroE.

HYLTON A. BRISCO AND. CHARLES J. ERICKSON, OF SAN FRANCISCO, CALIFORNIA.

DEEP-WELL PUMP.

Specification of Letters Patent.

Application filed December 28, 1906. Serial No. 349,813.

Patented Dec. 3, 1907.

To all whom it may concern:

, l Be it known that we, II. A. Brusco and C. J. ERICKSON, citizens ofthe United States, residing at San Francisco, in the county of SanFrancisco and State of California, have invented new and usefulImprovements in Deep-Well Pumps, of which the following is aspecification.

This invention relates to a deepv well pump, the object of'the'invention being to provide a double acting pump of such constructionthat the greatest quantity of water at each complete strolre of thepump.

An important feature of this invention is that inV connection therewithonly a single plunger rod is used while heretofore for double actingpumps two such plunger rods have been ordinarily used. This improvementsimplifies the construction and reduces the expense of manufacturing andinstalling the pump.

A further important improvement is that the cylinder used for the pumpis so constructed as to permit of the greatest possible diameter ofcylinder being introduced into a well of given size; moreover theconstruction of the cylinder is simple and cheap.

A further important'feature is that with this construction there is nospace for water to remain motionless or any sand or other solid materialto accumulate.

A further object of the invention is to provide a pump, the whole of theworking parts of which can be withdrawn from the well by drawing up theplunger rod.

In the accompanying drawing, Figure 1 is a vertical section of the pump;Figs. 2, 3, 4, and 5 are horizontal sections of Fig. 1 on the line2-.-2, 3-3, 4-1-4, and 5 5 respectively, the last named figure showinghalf of the cylinder;

Referring to the drawing, 1 represents the discharging pipe, the lowerend of which is screwed into a casting 2 forming the upper head oftheouter cylinder 3, which is screwed at the top upon the outside of saidhead, and in like manner the lower end of the cylinder is screwed on theoutside of the lower head 4 thereof.

5 indicates a cage which rests with a taper fit within the upper head 2.Upon a valve seat at the upper end of said cage rests an andepressed bya coiled spring 14, supported by l said stuffing box 12. To the lowerend of said plunger rod 13 is screwed a plunger 16, a nut 17 beingscrewed upon the extreme end of the rod, said plunger having passages 1Sclosed by an annular rubber valve 19, depressed by a coiled spring 20 suported by a collar 21l on the rod 13. Said p unger reciprocates withinthe inner cylinder 22, which is supported by being screwed at its upperend to the lower end of the cage 5. Said inner cylinder 22 extendsdownwards and terminates at a suitable distance above the upper end ofthe lower head o r casting 4, to permit of the water freely passingtherebetween. The annular space 23 between said inner and outercylinders forms the upward force conduit up which the water is forced onthe down stroke of the piston. Said water thus forced upwards in thisannular space passes through openings 24 formed in the upper head, withwhich openings register ports 25 formed in the cage 5. It is these ports25 that are closed by the valve 6.

, Vithin the lower end of the plunger 16 is secured a suction tube 29,which moves within a tubular guide 3() provided with a stuliing box 31,said guide forming the central part of a spider 32, seated within thelower head 4. Screwed upon the lower portion of said spider is aninduction pipe 33. Closing the passages 34 through the spider is arubber valve 35 de resscd by a coiled spring 36 supported by tlie loweredge of the stul'ling box 31. Upon the lower end of the suction tube issecured an annular shoe 37.

It will be seen that by drawing up the plunger rod, the whole of theworking parts can be drawn out of the well casing. In such cases, first,the plunger which is attached to the plunger rod reaches the lower edgeof the cage 6, so that said cage also ascends with the plunger rod.Therefore also the inner cylinder 22 also ascends. The suction tube 29,being secured to the plunger, also ascends, and the shoe 37 reaching thelower edge of the spider 31 carries with it the spider, and theinduction tube 33 secured thereto. This enables all the working parts tobe withdrawn from the cylinder for repairs vor other purposes.

The operation of the apparatus is as follows :-When the plungerdescends, it forces the water down through the space below the edge oithe inner cylinder and then up in the annular space 23 between the innerand outer cylinders and through the ports y25 into the discharge pipe,raising the valve 6, the valve 10 being at that time closed. Also uponsaid downward movement of the plunger, water is drawn into the interiorof the cylinder 22 between the valves 19 and 10, the valve 19 being thenopeneds Upon the upward movement of the plunger, said valve 19 isimmediatelyT closed and water is Jforced 'out from said interior of thecylinder 22 up past the valve 10 into the discharge pipe and at the sametime a suction is created in the annular chamber 23 between the innerand outer cylinders on account of the upper valve `6 being closed, thuscausing the lowest valve 35 to rise against its spring and admittingwater to said annular chamber. Then upon the return movement of thepiston the oper ation is repeated.l

lVe' claim 1. In a deep well pump, the combination of inner and outercylinders, spaced from each other to form an annular uplift space,

the bottom of the inner cylinder being spaced from the outer-cylinder topermit the water to pass around said bottom into said annular space, ahollow plunger sliding in the inner cylinder and carrying in its lowerend a suction tube, a valve closing the upper end of said plunger, asecond valve spaced above the first valve, a guideway for said suctiontube having a port, a valve closing said port, a guideway for theplunger rod having a port leading from the annular space between thecylinders, a valve closing said latter port, said guideway having anupward extension with an inwardly extending flange, and a coiled springabutting against said iiange and depressing the valve, substantially asdescribed.

2. ln a deep well pump, the combination of outer and inner cylinders, aport leading upwards from the annular space between the outer and innercylinders, a valve seated on said port to close the same, a hollowplunger reciprocating in the inner cylinder, said plunger carrying asuction tube and having at the top a port, a valve seated on said p ortto close the same, the bottom oi the inner cylinder being spaced fromthe outer cylinder to form a passageway for the Water to pass into theannular space between the two cylinders, a guideway for the suction tubecarried by the plunger, said guideway'havinga port, a valve closing saidport, a guideway `for the plunger rod above the plunger, said guidewayhaving a port and a valve seated on and closing said port, substantiallyas described.

3. In a deep well pump, the combination, with an outer casing, of aninner casing, a plunger reciprocating therein, a suction tube carriedthereby, said inner casing plunger and suction tube dividing theinterior of theY outer casing into two chambers, a` valve for eachchamber arranged to open automatic'- ally by the pressure of the liquidupon the downward movement 'of the plunger to permit liquid to passupwards in said chamber and to close automatically upon thereturnmovement oi the plunger, and a valve for each chamber, arranged toopen automatically by the pressure of the liquid upon the upwardmovement of the plunger to permit the liquid to pass to one chamber, andto.

force it from the other, said valve being arranged to turn movement ofthe plunger, substantially as described.

4. 1n a deep well pump, the combination,

with an outer casing, of an inner casing, a

close automatically upon the re.

plunger reciprocating therein, a suction tube carried thereby, saidinner casing plunger and suction tube dividing the interior of the outercasing into two chambers, a valve for each chamber arranged to openautomatically by the pressure of the liquid upon the downward movementof the plunger to per-v mit liquid to pass upwards in said chamber andto close automatically upon the return movement of the plunger, and avalve for each chamber, arranged to open 'automatically by the pressureof the liquid upon the upward movement of the plunger to permit theliquid to pass to one chamber, and to force it from the other, saidvalve being ar-` ranged to close automatically upon the return movementof the plunger, and means carried by the plunger for raising with theplunger rod all of the said valves and the valve seats therefor, and thesuction tube andinner casing, substantially as described.

5. In a deep well pump, the combination, with an outer casing, ci aninner casing, dividing the interior of the outer casingv into twochambers, an apertured plunger reciprocating within the inner casing,said aperture leading to the interior of said inner casing, a valve seatpermitting the passage of liquidv from the annu-lar space between theinner and outer casings, a valve closing the aperture in the plunger anda valve closing the valve seat, both adapted to be opened when theplunger descends, valve seats through which the water passes from theinterior oi the inner casing and to said annular chamber,

and valves on said valve seats adapted to be I opened automatically bythe pressure of the water upon the upward movement of the Flungenandmeans carried by the `plunger or raising with the plunger rod all of thesaid valves and the valve seats therefor, and the suction tube and innercasing, substantially as described.

In testimony whereof we have hereunto set our hands in the presence oftwo subserb- 10 ing witnesses.

HYLTON A. BRISCO. CHARLES J. ERICKSON /Vitnesses:

FRANCIS M. WRIGHT, D. B. RICHARDS.

